Fitting for refrigerating machinery



UNITED STi-XTES PATENT OFFICE.

.FRED J. HEIDEMAN, OF DETROI'L MICHIGAN. ASSIGNOR T0 KELVNATOR CORPORATON.

OF XVILMNGTON, DELAWARE, .A CORPORATION OF DELAWARE.

FITTING FOR. REFRIGERATING MACHINERYy Application filed July 224 1915.

Specification of Letes Patent.

Serial No` 246,236.

w1' ih .shown so u: tu illimtrnto the! me of my iixspiuved lifting.

)ly imlnmvd lil'iiig cimrjisl nlE :t l 0d lll llzii'ing t'lillzfiiia il longitudinal lloro ll i11- tm'sovtnd by :l z'erffss: 12. Unc Hide 0l.: the holly is lmnwd willi :in :ittfltllingg flungu 13 pi-e ciilii1ff :i lllil; faire il Llximig'li whicll tlm rim-ws 1:! 'ix-wml, mail by litmus (if wliiili the lundi mm lle? :ille llfil illllil l0 :l bOSS 15 married liti' tlm. tfi'aull; lensing m to ille Cylindvr lwlld m Sbix-xvii iii Fig. l. l one 0nd nl' tlm bui-ir 1l lli@ heidi' is tm'mml mthe :etrtulliliitfuA @if it liefrilde pipo. lll. living in tlm pleselil instant-Q Horn-illy tlli'mtdtd as :it ll' 'Fm' tlm rvceptimi of :i www tliindllc 1h. Upon tlw mlm' lllidi' 0l lli@ recefls l2 imm tlm` lmll ll :md mliaxinl with that Imre, tlio lmdy is lmmml with :l tlurru'lvd upm'- timx for the rocpt'iml 0l' tlm` valve .bunnct- :29 in which is nmimte'd tlle threaded mini 2l whose intim; wud i5 provided with :i lwziil' 'i2 adapted tcl 5mt upon tilu und nl lll@ bmx! ll :uid wlmi! it.

The lmdv iS also fmmcd with n threaded ulivi zulplefl tu i'ixfmii' vitllm' n Cloiugf plug 'l nl' rsialtnlilv @im mamillvr aS 2. This: `wlw-l naumjimilni':w with the rec-@SS .l2 by .mums uf im itlizlggmlllteiit; passageway 2S, and minimi im: provided For closing this lm'xhsixgw mty from t'llf inside llle nimma huw shown fumprising :i nclidl vulve 225), tluQMll-d inl@ :i ln'rss 30 appositi; tliut pzismlgvwzly. The stems 21 and Qi* :irclltxe shown us Surrounded by packing glands 3l whereby lezilmg (if the refrigerant prevented.

The parte; 2T muy citlltl lle the stems 0f pressure agus :is slmwm or they may lle cnnduits connecting l'lur` fittings ither with :1 rosmfvuir of rel'ijflimil or a place Vfor tlm dsclian'gu n? tlm simu. The. provision of* valve means for lille passageway 28 enables the, prevention uf leakage .while sub- `Htitutlng; n pipe 'for a. plug or vice verszy. In practice, tlm piessure gages :we not; ordinal-ily left connected but are applied temporarily as necessary for the, inspection or tvstzing of the ysmn. This System genvrzdly consists Gl- :i suitable, l'efligexating vuil 40 having one of' its ends connected to lli@` pipi! lli of ciw` filling' applied to the @vlinder hund. und lmi'ilig its opposite und simili-letal lo the vxjmnsimi valve 41. To the other sid@ Uf lis expansion valve is attached tlm expansion coil '-1-2, whose 0posite terminal is attached to the pipe 16 of the tting connected. to the compressor crank cese. It will be seen that by closing the two valves 21Q9 the compressor can be removed bodily from the system without loss of refrigerant; that by substituting en exhaust 4pipe for the plug 26, which is at the pressure side of the compressor,-opening the correspondiivr valve 29 and closinr the corresponding va ve 21, the refrigerant can be drained thoroughl from the system, merely by operating` t e compressor in the usual manner, either lnto a storage tank or vfrom time to time and without danger that refrigerant will escape.

It will be understood that the present drawings and descriptions are illustrative of only one out of a Vreet number of physical structures in whlch niy improvements can be embodied, wherefore greet changes can be made Within the scope ot' the claims hereto annexed. i

Having thus described my invention, what I claim is 1. In a device of the character described,

a loodyhevingaI pair of parallelV longitudi` nal bores, a transverse recess intersecting seid bores, each of said longltudinel bores y 4 having a valve member :it one end and a` threaded portion et the other end.

Q. ln a device ot' the character described`r a, body haring a pair of parallel longitudinal bores-y e transverse recess intersecting seid bores` u threaded portion. and valve Seat at one cud of each of said bores and n valve member at the other end ot' each of said bores t'or cooperating with said seat.

3. In a device ot the character described,

a` body havlng a transverse recess and a longitudinal bore intersecting said recess,

said body having a threaded aperture at one end of seid bore and in alinenient therewith, a bonnet seated ln said aperture, u valve member carried by said bonnet and adapted to close seid bore, a threaded socket at the other end of seid bore adapted to receive a pipe member, a Hang-e at the side of said body parallel to said bore and sur rounding said recess, and a threaded socket carried by seid bod y adapted to receive either a closing plug or e pipe member, said socket communicating with seid recess oy means of u valve-contro?led passage.

4. In a device of the character described, a body having :in attaching face and e pair of perarllel bores, seid body 'also hevingerecess opening through said, face and intersecting said bores, a valve member threaded into that side of euch bore which lies on one side of said recess and adapted to enter and close the opposite portions of the correspondine4 bore, and means for attaching a pipe to the portion ot' each bore opposite seid valve members.

lu testimony whereof` I hereunto a-fiix my signature.

FRED J. H EIDEMAN. 

